Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4478298 | Drill bit stud and method of manufacture | Lewis W. Hake, J. W. Randolph Miller | 1984-10-23 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4478298 | Drill bit stud and method of manufacture | Lewis W. Hake, J. W. Randolph Miller | 1984-10-23 |